WO2017144727A1 - Thermoplastic denture frames, methods for making thermoplastic denture frames and dentures containing thermoplastic denture frames - Google Patents
Thermoplastic denture frames, methods for making thermoplastic denture frames and dentures containing thermoplastic denture frames Download PDFInfo
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- WO2017144727A1 WO2017144727A1 PCT/EP2017/054531 EP2017054531W WO2017144727A1 WO 2017144727 A1 WO2017144727 A1 WO 2017144727A1 EP 2017054531 W EP2017054531 W EP 2017054531W WO 2017144727 A1 WO2017144727 A1 WO 2017144727A1
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- Prior art keywords
- denture
- polymer
- denture frame
- frame
- polymer composition
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 26
- 229920001169 thermoplastic Polymers 0.000 title abstract description 10
- 239000004416 thermosoftening plastic Substances 0.000 title abstract description 9
- 229920000642 polymer Polymers 0.000 claims abstract description 158
- 239000000203 mixture Substances 0.000 claims abstract description 100
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 45
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 37
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims abstract description 37
- 229920000491 Polyphenylsulfone Polymers 0.000 claims abstract description 31
- 230000014759 maintenance of location Effects 0.000 claims description 26
- 238000005520 cutting process Methods 0.000 claims description 20
- 238000003801 milling Methods 0.000 claims description 18
- 239000011164 primary particle Substances 0.000 claims description 15
- 239000000463 material Substances 0.000 claims description 11
- 239000000049 pigment Substances 0.000 claims description 11
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N titanium dioxide Inorganic materials O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000000945 filler Substances 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 239000012765 fibrous filler Substances 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 claims description 6
- 238000004891 communication Methods 0.000 claims description 4
- 210000000214 mouth Anatomy 0.000 description 21
- 239000000654 additive Substances 0.000 description 16
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 16
- 239000002585 base Substances 0.000 description 13
- 238000013461 design Methods 0.000 description 13
- -1 alkaline earth metal sulfonate Chemical class 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 8
- 239000003513 alkali Substances 0.000 description 8
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 238000001746 injection moulding Methods 0.000 description 8
- 238000010186 staining Methods 0.000 description 8
- 238000013459 approach Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 235000013305 food Nutrition 0.000 description 5
- 239000007943 implant Substances 0.000 description 5
- 125000003342 alkenyl group Chemical group 0.000 description 4
- 125000000217 alkyl group Chemical group 0.000 description 4
- 125000005600 alkyl phosphonate group Chemical group 0.000 description 4
- 150000008052 alkyl sulfonates Chemical class 0.000 description 4
- 125000000304 alkynyl group Chemical group 0.000 description 4
- 150000001408 amides Chemical class 0.000 description 4
- 150000001412 amines Chemical class 0.000 description 4
- 125000003118 aryl group Chemical group 0.000 description 4
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 4
- 150000003949 imides Chemical class 0.000 description 4
- 230000018984 mastication Effects 0.000 description 4
- 238000010077 mastication Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 125000001453 quaternary ammonium group Chemical group 0.000 description 4
- 150000003568 thioethers Chemical class 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 3
- 229910052736 halogen Inorganic materials 0.000 description 3
- 150000002367 halogens Chemical class 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012430 stability testing Methods 0.000 description 3
- 239000012192 staining solution Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000003917 TEM image Methods 0.000 description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 description 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000001055 chewing effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 239000010954 inorganic particle Substances 0.000 description 2
- 230000003278 mimic effect Effects 0.000 description 2
- 229920001206 natural gum Polymers 0.000 description 2
- 239000011505 plaster Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920006260 polyaryletherketone Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 238000011179 visual inspection Methods 0.000 description 2
- 229910000014 Bismuth subcarbonate Inorganic materials 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 208000006558 Dental Calculus Diseases 0.000 description 1
- 239000006057 Non-nutritive feed additive Substances 0.000 description 1
- 229920003295 Radel® Polymers 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229940073609 bismuth oxychloride Drugs 0.000 description 1
- MGLUJXPJRXTKJM-UHFFFAOYSA-L bismuth subcarbonate Chemical compound O=[Bi]OC(=O)O[Bi]=O MGLUJXPJRXTKJM-UHFFFAOYSA-L 0.000 description 1
- 229940036358 bismuth subcarbonate Drugs 0.000 description 1
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(III) oxide Inorganic materials O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 238000011960 computer-aided design Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 229960000956 coumarin Drugs 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000113 differential scanning calorimetry Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000011021 lapis lazuli Substances 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003387 muscular Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- BWOROQSFKKODDR-UHFFFAOYSA-N oxobismuth;hydrochloride Chemical compound Cl.[Bi]=O BWOROQSFKKODDR-UHFFFAOYSA-N 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 238000002371 ultraviolet--visible spectrum Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K6/00—Preparations for dentistry
- A61K6/80—Preparations for artificial teeth, for filling teeth or for capping teeth
- A61K6/884—Preparations for artificial teeth, for filling teeth or for capping teeth comprising natural or synthetic resins
- A61K6/891—Compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/0003—Making bridge-work, inlays, implants or the like
- A61C13/0004—Computer-assisted sizing or machining of dental prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/225—Fastening prostheses in the mouth
- A61C13/2255—Frames for partial dentures; Lingual bars
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/225—Fastening prostheses in the mouth
- A61C13/267—Clasp fastening
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C9/00—Impression cups, i.e. impression trays; Impression methods
- A61C9/004—Means or methods for taking digitized impressions
- A61C9/0046—Data acquisition means or methods
- A61C9/0053—Optical means or methods, e.g. scanning the teeth by a laser or light beam
Definitions
- the present invention relates to denture frames include at least one poly(ether ether) ketone polymer and at least one polyphenylsulfone polymer.
- the invention further relates to methods of making a denture frame. Still further, the invention relates to dentures incorporating denture frames.
- Dentures are designed to replace missing teeth. Dentures generally consist of a removable plate (or frame) that holds one or more teeth. Traditionally, dentures include a metal frame, which is desirable due to the stress resistance, durability, and stain resistance of the material. However, the use of metal has numerous disadvantages such as undesirable aesthetics, stiffness, and weight, as well as design and manufacturing limitations that can lead to poor fit and patient discomfort or dissatisfaction. Attempts have been made to address some of the deficiencies of metal by making dental prostheses from a thermoplastic polymer such as a poly(ether ether ketone) polymer; however a need remains for dental prostheses with improved toughness, flexibility, color stability and dimensional stability, leading to improved product lifetimes.
- a thermoplastic polymer such as a poly(ether ether ketone) polymer
- Fig. 1 is a schematic depiction of a top-down view of a mandibular partial removable denture.
- Fig. 2 is a schematic depiction of a top-down view of a mandibular partial removable denture frame.
- Fig. 3 is a schematic depiction of a top-down view of the mandibular partial removable denture frame of Fig. 2 positioned in a patient's mouth.
- Fig. 4 is a schematic depiction of a top-down view of a portion of a denture frame showing a finish line.
- Fig. 5 is a schematic depiction of a perspective view of a region of a denture frame showing a finish line.
- Fig. 6 is a schematic depiction of a cross section of a finish line.
- Fig. 7A and 7B are a schematic depictions of a cross section of a portion of a denture displaying a finish line with a cupped inner surface and a portion of an artificial gum, where Fig. 7A depicts the denture without flex and Fig. 7B depicts the denture under flexing.
- Fig. 8 is schematic depiction of a cross section of a portion of a denture frame showing a finish line having a symmetric cross section.
- thermoplastic denture frames having significantly improved lifetimes as well as comfort.
- the general lifetime of a denture frame (and denture) is a function of both its aesthetic characteristics and its mechanical characteristics.
- the denture frames described herein include a polymer compositions including at least one poly(ether ether ketone) (“PEEK”) polymer and at least one polyphenylsulfone (“PPSU”) polymer.
- PEEK poly(ether ether ketone)
- PPSU polyphenylsulfone
- the combination of the aesthetic characteristics and mechanical characteristics of the polymer compositions allows for denture frames having improved lifetimes and comfort.
- the general lifetime of a denture frame is a function of both its aesthetic characteristics and its mechanical characteristics.
- the denture frames described herein have significantly improved aesthetic characteristics relative to denture frames including a corresponding polymer compositions including the at least one PEEK polymer as the only polymer.
- dentures provide a biomechanical benefit (e.g. increased chewing ability)
- the aesthetic nature of the denture significantly impacts its customer appeal. For example, denture frames that take on a more natural appearance in the the oral environment into which they are inserted are highly preferable, as they help to conceal the presence of the denture frame itself.
- Denture design elements such as color matching, frame thickness and fitment, among other characteristics, help to conceal the denture when placed in the oral cavity.
- the oral cavity is a chemically harsh environment.
- Some types of common foods and drinks e.g. coffee and wine
- staining agents can be harsh staining agents, which come into contact with the denture (and, of course, the denture frame) during their intended and normal course of use.
- dentures eventually stain to an extent that they cannot be sufficiently cleaned to maintain desirable color matching, which makes the dentures more visibly apparent (less concealed).
- the polymer compositions described herein have surprisingly improved color stability (e.g. anti-staining ability), which can prolong the usable lifetime of the denture frame and reduce the rate at which the dentures are replaced based on the staining of the denture frame.
- the masticatory force generated during routine mastication of food can be from about 70 Newtons ("N") to 150 N, and up to 500 N to 700 N depending on the type of food and muscular size/density.
- the force is distributed along the anterior, general (covering the entire arch) and posterior parts of the arch formed by the teeth. At the locations of artificial teeth of the denture, the force is also at least partially transferred to the denture frame. Additionally, horizontal forces on the denture frame are generated during mastication by occlusal contact and by the oral musculature surrounding the denture during mastication.
- the denture frames described herein have improved comfort, relative to denture frames having a polymer compositions including PEEK polymers alone.
- the polymer compositions described herein allow for denture frames having thinner components while maintaining desirable mechanical properties. Not only are the resulting denture frames lighter, the thinner components allow for denture frames less noticeable to the wearer with respect to feel.
- the denture frames described herein when fabricated using selected milling methods, had significantly improved dimensional stability, relative to corresponding denture frames fabricated with injection molding methods. Accordingly, patient fitment issues are reduced.
- the denture frames include a polymer composition containing at least one PEEK polymer and at least one PPSU polymer.
- the polymer composition further includes one or more additives.
- each of the polymers in the polymer composition (or in the denture frame) is a PEEK polymer or a PPSU polymer.
- the polymer compositions have surprising color retention properties.
- the polymer compositions described herein have improved color retention.
- a corresponding polymer composition is one in which the PPSU polymer is replaced with PEEK polymer.
- a polymer composition includes at least one PEEK polymer, at least one PPSU polymer and additives, the corresponding polymer composition is the one in which the at least one PPSU polymer is replaced with the at least one PEEK polymer.
- the denture frames consists essentially of the polymer composition, with respect to color stability or dimensional stability.
- the ratio of the concentrations of the at least one PEEK polymer to the at least on PPSU polymer can be 40/60 to 90/10, preferably 50/50 to 80/20, preferably 55/45 to 75/25, preferably 58/42 to 70/30, most preferably 63/37.
- the polymer composition includes at least one PEEK polymer.
- a PEEK polymer denotes any polymer having, relative to the total number of moles of recurring units, at least 50 mol% of a recurring unit (R PEEK ) represented by the following formula:
- alkyl an alkenyl, an alkynyl, an aryl, an ether, a thioether, a carboxylic acid, an ester, an amide, an imide, an alkali or alkaline earth metal sulfonate, an alkyl sulfonate, an alkali or alkaline earth metal phosphonate, an alkyl phosphonate, an amine and an quaternary ammonium; and i, at each instance, is an independently selected integer from 0 to 4. In some embodiments, each i is zero.
- each of the benzene rings has 4 - i ring carbons bonded to a hydrogen atom, where i is from 0 to 4, selected independently for each i in Formula (1).
- i 1 for the left most benzyl ring
- 3 of those benzyl carbons are bonded to a hydrogen and one is bonded to an R 1 .
- R PEEK recurring unit
- each i is zero.
- the PAEK polymer has at least about 60 mol%, at least about 70 mol%, at least about 80 mol%, at least about 90 mol%, at least about 95 mol% or at least about 99 mol% recurring unit (R PEEK ), relative to the total number of moles of recurring units in the PEEK polymer.
- the at least one PEEK polymer includes one or more recurring units (R* PEEK ), in addition to recurring unit (R PEEK ).
- R* PEEK recurring units
- Each of the one or more recurring units (R* PEEK ) is represented by Formula (1) or (2), and is distinct from each of the other recurring units in the polymer.
- the total concentration of the one or more recurring units (R* PEEK ) and the recurring unit (R PEEK ) is more than about 50 mol%, at least about 60 mol%, at least about 70 mol%, at least about 80 mol%, at least about 90 mol%, at least about 95 mol% or at least about 99 mol%, relative to the total number of moles of recurring units in the PEEK polymer.
- the concentration of the at least one PEEK polymer, relative to the total weight of the polymer composition is at least about 30 wt.%, at least about 40 wt.%, at least about 50 wt.% or at least about 55 wt.%. Additionally or alternatively, the concentration of the at least one PEEK polymer, relative to the total weight of the polymer composition, is no more than about 80 wt.%, no more than about 75 wt.% no more than about 70 wt.% or no more than about 65 wt.%.
- additional PEEK polymer concentrations within the explicitly disclosed ranges are contemplated and within the scope of the present disclosure.
- the total concentration of the PEEK polymers in the polymer composition is within the ranges described above.
- the polymer compositions includes at least one PPSU polymer.
- a PPSU polymer denotes any polymer having, relative to the total number of moles of recurring units, at least 50 mol % of a recurring unit (Rppsu) represented by the following formula:
- R 2 at each instance, is independently selected from a halogen, an alkyl, an alkenyl, an alkynyl, an aryl, an ether, a thioether, a carboxylic acid, an ester, an amide, an imide, an alkali or alkaline earth metal sulfonate, an alkyl sulfonate, an alkali or alkaline earth metal phosphonate, an alkyl phosphonate, an amine, and a quaternary ammonium; and j, at each instance, is an independently selected integer from 0 to 4. Preferably each j is zero.
- recurring unit (Rppsu) is represented by the following formula:
- each j is zero.
- the PPSU polymer has at least about 60 mol%, at least about 70 mol%, at least about 80 mol%, at least about 90 mol%, at least about 95 mol% or at least about 99 mol% recurring unit (Rppsu), relative to the total number of moles of recurring units in the PPSU polymer.
- the at least one PPSU polymer includes one or more recurring units (R*ppsu), in addition to recurring unit (Rppsu)-
- Each of the one or more recurring units (R*ppsu) is represented by Formula (1) or (2), and is distinct from each of the other recurring units in the polymer.
- the total concentration of the one or more recurring units (R*ppsu) and the recurring unit (RPEEK) is more than about 50 mol%, at least about 60 mol%, at least about 70 mol%, at least about 80 mol%, at least about 90 mol%, at least about 95 mol% or at least about 99 mol%, relative to the total number of moles of recurring units in the PPSU polymer.
- the concentration of the at least one PPSU polymer, relative to the total weight of the polymer composition is at least about 10 wt.%, at least about 15 wt.%, at least about 20 wt.%, at least about 25 wt.% or at least about 30 wt.%. Additionally or alternatively, the concentration of the at least one PPSU polymer, relative to the total weight of the polymer composition, is no more than about 60 wt.%, no more than about 50 wt.%, no more than about 55 wt.%, no more than about 50 wt.%, no more than about 45 wt.% or no more than about 40 wt.%.
- the polymer composition can include one or more additives.
- the additives can be selected from the group consisting of ultraviolet light stabilizers, antioxidants, pigments, processing aids, lubricants, and radiopaque compounds (including, but not limited to, barium sulfate, bismuth trioxide, bismuth oxychloride, and bismuth subcarbonate.
- Pigments can be particularly desirable additives in the polymer composition, to impart desirable aesthetic qualities to the denture frame.
- aesthetics are a significant consideration with respect to denture frames. The more the denture frame can be hidden from casual sight and the more the frame blends into the oral environment, the more concealed the use of the denture frame (and the ultimate denture).
- Pigments incorporated into the polymer composition of the denture frame to impart aesthetic qualities to help conceal use in the oral environment can include, but are not limited to, Ti0 2 ⁇ e.g. rutile, anatase or brookite) (white), coumarin (yellow), lapis lazul (blue) or any combination of two or more thereof.
- the total concentration of pigments, relative to the total weight of the polymer composition can be at least about 0.1 parts per hundred by weight ("pph"), at least about 1 pph, at least about 1 pph, at least about 2 pph or at least about 3 pph. In some embodiments, the total concentration of pigments, relative to the total weight of the polymer composition, is no more than about 25 pph, no more than about 15 pph, no more than about 10 pph or no more than about 7 pph.
- pph parts per hundred by weight
- the total concentration of pigments, relative to the total weight of the polymer composition is no more than about 25 pph, no more than about 15 pph, no more than about 10 pph or no more than about 7 pph.
- particulate additives are inorganic particles having an average primary particle diameter of 100 including, but not limited to, Ti0 2 .
- Particulate additives have a general spherical appearance.
- crystalline particulate additives such as inorganic particles, have facets corresponding to the underlying crystal lattice, but nevertheless have roughly equivalent spatial dimensions from the geometric center.
- portions of the denture frames of interest herein are relatively thin (e.g. having a width less than 5 mm or even less than 2 mm).
- the total concentration of particulate fillers is less than about 30 wt. %, less than about 20 wt. %, less than about 10 wt. %, less than about 5 wt. %, less than about 2 wt. %, relative to the total weight of the polymer composition.
- the person of ordinary skill in the art will recognize additional particular filler concentrations within the explicitly disclosed ranges are contemplated and within the scope of the present disclosure.
- the particulate additives have an average primary particle diameter (length in the longest dimension of the particle) of from about 100 nanometers ("nm") to about 5 micrometers (" ⁇ ").
- the particulate additives can have a distribution of particle diameters such that at least about 80%, at least about 95%, or at least 99% of the primary particles have a diameter greater than about 40% of the average diameter and less than about 700% of the average diameter.
- the particulate additives can have a distribution in primary particle diameters such that at least about 80%, at least about 95%, or at least 99%, of the primary particles have a diameter greater than about 40% of the average diameter and less than about 300% of the average diameter.
- the particulate additives can have a distribution of primary particle diameters such that at least about 95% or at least 99% of the primary particles have a diameter greater than about 45% of the average diameter and less than about 200% of the average diameter.
- Primary particle sizes (as well as average primary particle sizes and corresponding distributions) can be determined by transmission electron micrographs ("TEM").
- TEM transmission electron micrographs
- “primary” particle refers to the unagglomerated particle. Due to their small size, the primary particles tend to form agglomerates because of vad der Waals forces. Nevertheless, the primary particles can be clearly seen in TEM images.
- the polymer composition is free of a fibrous fillers.
- Fibrous fillers include, but are not limited to, glass fibers and carbon fibers. The presence of fibrous fillers in oral application settings can present health issues. Accordingly, in some embodiments, the polymer composition has less than about 10 wt.%, preferably less than 5 wt.% of a fibrous filler, relative to the total weight of the polymer composition.
- the denture frames described herein are desirably fabricated using a milling approach.
- Desirable milling approaches involve cutting a blank including the polymer composition to produce the denture frame (also known as subtractive manufacturing or machine milling).
- the blanks are formed by extruding the polymer composition into a basic shape (e.g. a rod) subsequently cutting the shape to have the desired thickness.
- the fabrication method is free of injection molding approaches with respect to blank or denture frame fabrication.
- denture frames including the polymer composition described herein when fabricated using selected milling methods, had significantly improved dimensional stability, relative to corresponding denture frames fabricated with injection molding methods.
- injection molding the molten polymer composition is injected into a mold having an inner cavity forming the negative of the intended denture frame design or injection molded into a mold having an inner cavity forming a blank and subsequently milled into a denture frame (described in detail below).
- the polymer composition of the denture frame fabricated with injection molding techniques exhibited significantly compromised dimensional stability and, correspondingly, the dimensional fidelity of the denture frame with its original, intended design.
- the loss of fidelity resulted in eventual inadequate fitment of the denture frame to the extent that it was an unacceptable for use in the patient's mouth.
- denture frames fabricated using a milling approach had significantly increased dimensional stability and corresponding fidelity to the design of the denture frame.
- a desirable milling approach involves cutting an extruded blank (as described below) formed from the polymer composition to produce the denture frame.
- a cutting tool is used to remove material of the blank to form the denture frame.
- the cutting tool has cutting edges (e.g. a drill bit including, but not limited to, a router bit) that are contacted with the blank to remove material of the blank corresponding to the negative design of the denture frame.
- cutting edges e.g. a drill bit including, but not limited to, a router bit
- the person of ordinary skill in the art will know how to select an appropriate cutting tool as well as use parameters such as rotation frequency and routing speed according the specific denture frame features and polymer composition.
- a laser can be used as a cutting tool. Based on the disclosure herein, the person of ordinary skill in the art will know to appropriately select a laser and use parameters such as pulse rate and raster speed according to the specific denture frame features and polymer composition.
- the cutting tool can be desirably controlled using a computer processor.
- the computer processor can be in electronic communication with one or more controllers that move the cutting tool and control its use parameters (e.g. rotation speed of a drill bit).
- the computer processor can also be in electronic communication with a memory (e.g. processor cache, random access memory or other physical memory including, but not limited to, a hard drive, a solid state drive, and universal serial bus storage) containing a digital representation of the denture frame.
- the computer processor can access the memory and control the positioning, as well as the use parameters of the cutting tool, to remove polymer composition from the blank and form the desired denture frame.
- Examples of such computer aided milling approaches include, but are not limited to, CAD/CAM, in which a computer aided design (“CAD”) software is used to create digital file containing a digital representation of the denture frame, readable by a computer processer, and a computer aided manufacturing (“CAM”) is used to read the digital file and control the cutting tool to fabricate the denture frame as described above according to the digital representation.
- CAD computer aided design
- CAM computer aided manufacturing
- Machines for implementing CAM methods moving the cutting tool or object to be milled in various directions.
- CAM machines can be 3-axis (corresponding to the 3 translation axes), 4-axis to 6-axis (3 translation axes + 1 to 3 rotational axis) or 7-axis apparatuses.
- the digital representation can be obtained using a digital file containing a digital representation of a patient's mouth, for example, obtain by a direct optical scan of the patient's mouth or an optical scan of a mold of a patient's mouth.
- the denture frame design e.g. physical dimensions and features of the denture frame
- corresponding digital file can be produced by using CAD.
- the blank is a solid block of the polymer composition.
- the blank can be any shape or size suitable for use with a milling machine.
- cylindrical blanks also known as pucks
- the cylindrical blank has a thickness ranging from about 10 millimeters ("mm") to about 70 mm or from about 15 mm to 60 mm, and a diameter ranging from about 20 mm, from about 40 mm or from about 70 mm to about 100 mm.
- the blank can be made by extruding the polymer composition.
- the polymer composition is extruded into rods having the desired diameter of the cylindrical blank and the rod is subsequently cut perpendicular to the direction of extrusion to form pucks have the desired thickness ("extruded blank").
- the polymer composition can be cut as it exits the extruder.
- rods can be formed having a length larger than the blank and subsequently cut to form the cylindrical blanks.
- blanks may also be formed by injection molding the polymer composition into a mold having an inner cavity corresponding to the desired blank dimensions, denture frames milled from such blanks have significant dimensional instability.
- the denture frame is incorporated into a denture.
- the denture may be a complete denture that replaces all of a patient's teeth in a single arch (e.g. the maxillary (upper) or mandibular (lower) arch), or a partial denture, which replaces less than all of a patient's teeth in a single arch.
- the denture is a partial denture, it is designed to accommodate a patient's existing teeth or implants.
- the denture is a partial removable denture that is designed to be regularly removed from the patient's mouth for cleaning.
- the components of the denture 100 include a denture frame 102, artificial gums 104 supported by the denture frame 102, and artificial teeth 106 supported by the artificial gums 104.
- the artificial gums 104 preferably include at least one acrylic polymer, and may be colored to match a patient's gums and mimic natural gums.
- the artificial teeth 106 mimic the shape and color of natural teeth.
- the dental prosthesis is a denture frame, preferably a partial removable denture frame.
- the denture frame may be formed from a single piece of plastic and may be free of metal.
- a denture frame that is free of metal includes less than 1 % of metal by weight of the denture frame.
- metal means elemental metals or alloys thereof such as, for example, gold, silver, platinum, nickel, aluminium, stainless steel, etc.
- At least a portion of the polymer composition in the denture frame has a crystallinity greater than 21 %, and the polymer composition includes less than 63 wt. % of the PAEK based on the total weight of the polymeric material, where the crystallinity is determined by measurement of the enthalpy of fusion from the second heat cycle by differential scanning calorimetry (DSC) according to ASTM D3418-03, E1356-03, E793-06, and E794-06.
- DSC differential scanning calorimetry
- denture frame 200 includes retention grid 202, which is a portion of the denture frame adapted for attachment of the artificial gums (not shown).
- the retention grid includes one or more retention holes 204 extending through denture frame 200 to aid in the attachment of the artificial gums.
- the holes can have an area (e.g. opening diameter) of less than 10 square millimeters ("mm"), less than 7 mm 2 , or less than 5 mm 2 .
- the denture frame may include at least two, preferably at least four, preferably at least six, preferably at least 8 or more holes.
- the holes may be positioned within the retention grid to key artificial gum material onto the denture frame. In other words, when the artificial gums are attached to the denture frame, the material of the artificial gums may extend through the holes in the retention grid to aid in mechanical adhesion of the artificial gums to the denture frame.
- the retention grid can be flat or curved to adhere to the shape of the patient's existing natural gum tissue.
- the denture frame may further include a finish line.
- finish line 206 is a ridge in denture frame 200 that bounds the retention grid 202 on one or more sides of retention grid 202.
- finish line 206 extends along and interfaces with the a border of the artificial gums where the artificial gums contact denture frame 200.
- a denture includes a denture frame having a finish line in contact with an artificial gum.
- the finish line has a tip, disposed towards the top of the denture frame, and a base, disposed towards the bottom of the denture frame.
- the two surfaces between the top and base of the finish line are referred to as the inner surface (the surface configured to contact the artificial gum when the denture frame is assembled into a denture) and the outer surface.
- the finish lines of interest herein have a substantially fiat inner surface, which flexes with the artificial gum when in use in the mouth.
- a substantially flat inner surface refers to a surface that is oriented within 20 degrees of an axis that is perpendicular to (i) to the base and (ii) the direction of the finish line; ("Reference Axis").
- the inner surface is oriented within 20 degrees of the Reference Axis over at least 85 % over the surface including the tip and extending towards the base.
- the inner surface is oriented within 20 degrees of the Reference Axis over at least 90 %, at least 95 %, or at least 99 % over the surface including the tip and extending towards the base.
- the finish line has a linear distance from the tip to the base in a cross section of the finish line from about 0.5 mm to about 1.5 mm, over at least 90 %, at least 95 % or at least 99 % of the length of the finish line.
- the finish line has a substantially flat inner surface along at least 90 %, at least 95 %, or at least 99 % of the length of the finish line. The length of the finish line is its length along the tip from endpoint to endpoint (e.g. start to finish).
- the substantially fiat surface can be further understood by looking at a cross section of the finish line perpendicular to its direction.
- the direction of the finish line can be determined by viewing a denture frame in a top down orientation. In such a perspective, the tip of the finish line traces out a curve. At any point along the finish line (e.g. the point at which a cross section is taken), its direction is oriented along the tangent line at that point.
- Fig. 4 is a schematic depiction showing a top-down view of a portion of a denture frame showing a finish line. Referring to Fig. 4, finish line 402 is adjacent to retention grid 404. The orientation of finish line 402 at point 406 is along direction 408.
- Fig. 5 is a schematic depiction of a perspective view of a region of a denture frame showing a finish line.
- Denture frame region 500 has finish line 502 adjacent retention grid 504.
- finish line 502 has cross section 508, which is perpendicular to the direction of finish line axis 510.
- Axis 512 is in the plane of cross section 508, and intersects base 509 of finish line 502 at point 511 on outer surface 514 and at point 513 on the inner surface (not labelled).
- finish line 502 has outer surface 514 and inner surface 516.
- Outer surface 514 is oriented away from retention grid 504 and inner surface 516 is oriented towards retention grid 504.
- Inner surface 516 is a substantially flat surface.
- Inner surface 516 is oriented within 20 degrees of Reference Axis 518 over at least 85 %, at least 90 %, at least 95 %, or at least 99 % over the region of inner surface 516 extending from tip 520 and towards base 509. In some embodiments, inner surface 516 is substantially flat along at least 90 %, at least 95 %, or at least 99 % of the length of finish line 502.
- Fig. 7 is a schematic depiction of a cross section of a portion of a denture displaying a finish line with a cupped inner surface and a portion of an artificial gum. Referring to Fig. 7A, Finish line 702 has cupped inner surface 704, which helps to retain artificial gum 706.
- Cupped inner surface 704 helps to restrict movement of gum 706 in direction 708 (opposite to retention grid 710), as well as to help prevent debris (e.g. food) from becoming trapped between artificial gum 706 and finish line 702.
- debris e.g. food
- Fig. 7B depicts finish line 702 upon flexing, as previously described. Because of cupped inner surface 704, as artificial gum 706 flexes, artificial gum 706 and finish line 702 are pushed apart, creating cavity 714 and causing finish line 702 to deform significantly under the applied stress, as schematically depicted by region 712.
- the applied stress can cause finish line 702 to break, for example in region 712, due to its relatively thin design.
- Finish lines incorporating a substantially flat inner surface can significantly reduce the risk of retention line and denture frame breakage.
- the substantially flat inner surface reduces the stress on the finish line upon flexing of the artificial gum, relative to a design having a cupped inner surface. Because the inner surface does not help to hold the artificial gum in place (e.g. at least partially due to the fact that surface is substantially flat), flexing of the finish line with flexing of the artificial gum is significantly reduced, reducing the stress placed on the finish line.
- the artificial gum in the absence of bonding to the retention grid, the artificial gum can be slidably released from the denture frame in a direction opposite from the retention grid (e.g. direction 522 in Fig. 6, parallel to Reference Axis 518), which helps to prevent the finish line from holding the artificial gum in place during flexing.
- structural integrity under flexing is still further improved.
- the outer surface of the finish line is generally shaped to form a smooth transition from the base to the artificial gum.
- the magnitude (absolute value of) the angle of the outer surface relative to the Reference Axis is less than that of the inner surface, over at least 80 %, at least 90 % or at least 95 % of the region of the inner surface extending from the tip and towards the base.
- the finish line has an asymmetric cross section in a plane perpendicular to the length of the finish line (e.g. the cross section lacks an axis of symmetry parallel to the Reference Axis).
- outer surface 514 provides a smooth transition from base 509 (at point 511) to tip 520.
- the magnitude of the angle between outer surface 514 and Reference Axis 518 is greater than the magnitude of the angle between inner surface 516 and Reference Axis 518 over the region of inner surface 516 from tip 520 to location 524 (at least 80 %, at least 90 % or at least 95 % of the region of the inner surface extending from the tip and towards the base).
- cross section 508 of finish line 502 depicted lacks an axis of symmetry parallel to Reference Axis 518.
- the magnitude of the angle of the outer surface relative to the Reference Axis is substantially the same (within 10°) as that of the inner surface from the tip to the base.
- the finish line has a symmetric cross section in a plane perpendicular to the length of the finish line (e.g. the cross section has an axis of symmetry parallel to the Reference Axis).
- Fig. 8 is schematic depiction of a cross section of a portion of a denture frame showing a finish line having a symmetric cross section.
- Finish line 802 has substantially flat inner surface 804 and outer surface 806.
- the magnitude of the angle of outer surface 806 with Reference Axis 808 is substantially the same magnitude of the angle of inner surface 804 with Reference Axis 808.
- cross section of finish line 802 has an axis of symmetry along Reference Axis 808.
- Reference Axis 808 is perpendicular to axis 810.
- the denture frame may also include rests or clasps, which in the context of a partial removable denture frame, anchor the denture frame in the patient's mouth by friction fitting the denture frame to the patient's existing natural teeth or implants.
- Applicants have surprising found that denture frames made from the polymer composition exhibit increased toughness, flexibility, and dimensional stability allowing for the use of clasps and rests that improve fit and retention of the denture frame.
- denture frame 200 may include at least one clasp 208 that that extends from denture frame 200 to wrap around and grip undercut 214 of patient's natural tooth 210 or implant (not shown), thereby friction fitting denture frame 200 in patient's mouth 212.
- denture frame 200 includes rests 216 that aid in holding denture frame 200 in position in patient's mouth 212.
- a rest is a portion of the denture frame extending onto the bite surface of a patient's natural tooth or implant. Because the rest may come into contact with an opposing tooth during chewing, it must be impact resistant and can become abraded. It was found that the polymer composition is particularly well-suited for use in rests because of its toughness and flexibility.
- KetaSpire® PEEK KT-820 NL Q available from Solvay Specialty Polymers USA, L.L.C.
- Each formulation was melt compounded using a 26 mm diameter Coperion® ZSK-26 co- rotating partially intermeshing twin screw extruder having an L/D ratio of 48: 1.
- the resins and additives were fed at barrel section 1 using a gravimetric feeder at throughput rates in the range 30-40 lb/hr.
- the extruder was operated at screw speeds of around 200 RPM. Vacuum was applied at barrel zone 10 with a vacuum level of about 27 inches of mercury.
- a single -hole die was used for all the compounds and the molten polymer strand exiting the die was cooled in a water trough and then cut in a pelletizer to form pellets approximately 3.0 mm in length by 2.7 mm in diameter.
- the example formulations were injection molded to produce 3.2 mm (0.125 in) thick ASTM tensile and flexural specimens for mechanical property testing.
- Type I tensile ASTM specimens and 5 in x 0.5 in x 0.125 in flexural specimens were injection molded.
- ASTM D792 density and specific gravity
- ASTM D256 Notched Izod impact resistance
- Example 3 The composition of Example 3 was injection molded into cylindrical blanks (i.e. blanks) measuring 98 mm in diameter and 18 mm in thickness. Blanks of identical size were also prepared by extruding of a rod of the composition of Example 3 and cutting the rod to form extruded blanks. A mandibular impression was taken of a patient's teeth, from which a plaster cast was prepared. The plaster cast was scanned using a 3Shape D750 Lab Scanner to create an electronic model of the patient's teeth. A denture frame was designed using a computer employing CAD/CAM technology and identically-shaped denture frames were milled from each blank. Following milling, the fit of each denture frame was assessed on the cast model by visual inspection.
- a framework was considered seated when all rests on the denture frame came into full contact with their rest seats on the cast model.
- Each denture frame fit well on the cast model directly after milling. After approximately 24 hours, the fit of each denture frame was reassessed by visual inspection. While the denture frames milled from extruded blanks continued to exhibit good fit, the denture frames milled from injection molded blanks were found to have distortions of over 2 mm from their original dimensions, rending the frames unusable.
- Example 3 The color stability of the compositions of Example 3 and Comparative Example C 1 after exposure to coffee (a typical staining agent found in the oral environment) was evaluated using a modified AL-PCL-MEC-LTM-077 test method.
- a coffee staining solution was prepared by adding 20 g Nescafe ClasicoTM dark roast coffee, available from Nestle, to 1000 ml of boiling distilled water.
- Each specimen was conditioned by placing it in distilled water at 37+/-l°C for 24 hours before spectrophotometric data was collected as a baseline measurement. Following conditioning, three test specimens of each material were soaked in the coffee staining solution, and the remaining three specimens were soaked in distilled water as a control, at 37+/-l°C for 30 days. The test specimens were removed after 30 days and analyzed with the spectrophotometer. Each test specimen was cleaned by placing it in a Ney Ultrasonic 28B cleaner for 10 minutes at room temperature (21°C). The cleaning solution was Ultrasonic Solution #4 Tartar and Stain Remover available from Quala Dental Products. Spectral analysis was also performed following cleaning.
- the color was measured according to the CIE 1976 L-a-b coordinates standard where the L* coordinate represents the lightness (black to white) scale, the a* coordinate represents the green-red chromaticity and the b* scale represents the blue-yellow chromaticity.
- Example 3 As shown in Table 2, the compositions of Example 3 and Comparative Example 1 each exhibited increased staining after 30 days in the coffee staining solution as shown by the AEs of 17.557 and 5.861 , respectively. After cleaning, however, the composition of Example 3 unexpectedly exhibited a significantly greater reduction in staining and a lower ⁇ than the composition of Comparative Example 1.
- a denture frame comprising:
- the denture frame of inventive concept 1 wherein the particulate filler as an average primary particle diameter of 100 nm to 5 ⁇ .
- the denture frame of inventive concept 5 wherein the finish line as an asymmetric cross section in a plane perpendicular to the length of the finish line. 7.
- a denture comprising the denture frame of any one of inventive concepts 1 to 7, wherein the denture comprises an artificial gum disposed on the retention grid and in contact with the inner surface of the finish line.
- the denture of inventive concept 8 further comprising at least one artificial tooth in contact with the artificial gum.
- R 1 at each instance, is independently selected from the group consisting of a halogen, an alkyl, an alkenyl, an alkynyl, an aryl, an ether, a thioether, a carboxylic acid, an ester, an amide, an imide, an alkali or alkaline earth metal sulfonate, an alkyl sulfonate, an alkali or alkaline earth metal phosphonate, an alkyl phosphonate, an amine and an quaternary ammonium; and i, at each instance, is an independently selected integer from 0 to 4, preferably each i is zero and
- R 2 is independently selected from a halogen, an alkyl, an alkenyl, an alkynyl, an aryl, an ether, a thioether, a carboxylic acid, an ester, an amide, an imide, an alkali or alkaline earth metal sulfonate, an alkyl sulfonate, an alkali or alkaline earth metal phosphonate, an alkyl phosphonate, an amine, and a quaternary ammonium; and j, at each instance, is an independently selected integer from 0 to 4, preferably each j is zero.
- pph parts per hundred by weight
- a method of forming a denture frame comprising:
- the method of inventive concept 18 further comprising fabricating the blank, wherein the fabricating comprises extruding the polymer composition into a rod having a diameter from about 20 mm to about 100 mm and cutting the rod to form the cylindrical blank.
- the CNC machines includes a computer processor in electronic communication with a memory;
- the computer processor accesses the memory to read a digital file comprising a digital representation of the patient's mouth;
- the CNC guides a cutting tool according to the digital representation of the patient's mouth to remove material from the blank and to form the denture frame. 22.
- the method of inventive concept 21 further comprising creating the digital representation of the patient's mouth, wherein the creating comprises performing an optical scan of the patient's mouth.
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Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
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EP17706826.9A EP3419585B1 (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frame, manufacture method and denture |
US16/079,223 US20190091111A1 (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frames, methods for making thermoplastic denture frames and dentures containing thermoplastic denture frames |
JP2018544923A JP2019507635A (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frame, method of manufacturing thermoplastic denture frame and denture containing thermoplastic denture frame |
CA3014854A CA3014854A1 (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frames, methods for making thermoplastic denture frames and dentures containing thermoplastic denture frames |
KR1020187026807A KR20180116326A (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frame, method of making thermoplastic denture frame and denture containing thermoplastic denture frame |
AU2017223046A AU2017223046B2 (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frames, methods for making thermoplastic denture frames and dentures containing thermoplastic denture frames |
CN201780025806.8A CN109069352A (en) | 2016-02-25 | 2017-02-27 | Thermoplasticity artificial tooth frame, the method for manufacturing thermoplasticity artificial tooth frame and the artificial tooth containing thermoplasticity artificial tooth frame |
BR112018017349A BR112018017349A2 (en) | 2016-02-25 | 2017-02-27 | denture structure, denture, and method for forming a denture structure |
JP2022074112A JP2022115919A (en) | 2016-02-25 | 2022-04-28 | Thermoplastic denture frames, methods for making thermoplastic denture frames, and dentures containing thermoplastic denture frames |
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US201662299657P | 2016-02-25 | 2016-02-25 | |
US62/299,657 | 2016-02-25 | ||
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US201662421532P | 2016-11-14 | 2016-11-14 | |
US62/421,532 | 2016-11-14 |
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PCT/EP2017/054531 WO2017144727A1 (en) | 2016-02-25 | 2017-02-27 | Thermoplastic denture frames, methods for making thermoplastic denture frames and dentures containing thermoplastic denture frames |
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KR (1) | KR20180116326A (en) |
CN (1) | CN109069352A (en) |
BR (1) | BR112018017349A2 (en) |
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Cited By (1)
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EP3597142A1 (en) * | 2018-07-20 | 2020-01-22 | DGSHAPE Corporation | Denture base manufacturing method, cutting apparatus, and workpiece material |
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KR102085336B1 (en) * | 2019-09-11 | 2020-03-05 | (주)더덴탈솔루션 | Method for manufacturing fixed denture using PEEK and zirconia and fixed denture manufactured therefrom |
KR102669075B1 (en) * | 2021-11-10 | 2024-05-24 | 주식회사 스마일캐드 | Spacer and method for making the same |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2200672B1 (en) * | 2007-09-11 | 2012-06-27 | Solvay Specialty Polymers USA, LLC. | Improved prosthetic devices |
US20140322462A1 (en) * | 2011-12-21 | 2014-10-30 | Solvay Specialty Polymers Usa, Llc. | High Performance Sulfone Polymer Composition |
US20150011673A1 (en) * | 2011-12-15 | 2015-01-08 | Tokuyama Dental Corporation | Organic/inorganic composite, manufacturing method therefor, dental material, and bone substitute material |
GB2523004A (en) * | 2014-01-09 | 2015-08-12 | Juvora Ltd | Polyaryletherketone prosthodontics device in the form of an inlay or onlay |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI405816B (en) * | 2006-03-17 | 2013-08-21 | Solvay Advanced Polymers Llc | New polymer composition |
US20120107771A1 (en) * | 2010-11-01 | 2012-05-03 | Carol Hrenak | Removable Partial Dental Prosthesis |
EP2738219A1 (en) * | 2012-11-28 | 2014-06-04 | Solvay Specialty Polymers USA, LLC. | PAEK/PAES compositions |
-
2017
- 2017-02-27 CA CA3014854A patent/CA3014854A1/en active Pending
- 2017-02-27 WO PCT/EP2017/054531 patent/WO2017144727A1/en active Application Filing
- 2017-02-27 BR BR112018017349A patent/BR112018017349A2/en not_active Application Discontinuation
- 2017-02-27 KR KR1020187026807A patent/KR20180116326A/en unknown
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Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2200672B1 (en) * | 2007-09-11 | 2012-06-27 | Solvay Specialty Polymers USA, LLC. | Improved prosthetic devices |
US20150011673A1 (en) * | 2011-12-15 | 2015-01-08 | Tokuyama Dental Corporation | Organic/inorganic composite, manufacturing method therefor, dental material, and bone substitute material |
US20140322462A1 (en) * | 2011-12-21 | 2014-10-30 | Solvay Specialty Polymers Usa, Llc. | High Performance Sulfone Polymer Composition |
GB2523004A (en) * | 2014-01-09 | 2015-08-12 | Juvora Ltd | Polyaryletherketone prosthodontics device in the form of an inlay or onlay |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3597142A1 (en) * | 2018-07-20 | 2020-01-22 | DGSHAPE Corporation | Denture base manufacturing method, cutting apparatus, and workpiece material |
JP2020010950A (en) * | 2018-07-20 | 2020-01-23 | Dgshape株式会社 | Production method of denture base and cutting device as well as cutting material |
Also Published As
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CA3014854A1 (en) | 2017-08-31 |
KR20180116326A (en) | 2018-10-24 |
CN109069352A (en) | 2018-12-21 |
BR112018017349A2 (en) | 2018-12-26 |
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